propguard for the 56mm frame from T4Bee

Hi, i made this simple propguard for the super ultra tiny 56mm wheelbase frame designed by T4bee. its simple, yet i found it very effective indoors. the complete propguard is about 3.5-4 grams, depending on your print settings. I mounted it at the top of the esc-fc-receiver stack.
i know its not perfect, but it'll do the job. also i only tested it with the 0703 version of the original frame from T4bee.
questions and advices are welcome :)